Triconex DI3311 Digital Input Module Most Favorable

Overview

The Triconex DI3311 is a high-integrity Digital Input Module designed for Tricon v10/v11 safety systems. It uses Triple Modular Redundancy (TMR) architecture to maximize reliability. Therefore, it suits safety-critical applications in oil & gas, power generation, and chemical processing. With 32 input channels and advanced diagnostics, the DI3311 acquires signals accurately and provides robust fault coverage. Consequently, it supports emergency shutdown systems, fire and gas detection, and process interlocks efficiently.

Technical Specifications

• Model: DI3311
• Module Type: Digital Input Module
• Number of Channels: 32 (commoned inputs)
• Nominal Input Voltage: 24 VDC
• Operational Voltage Range: 15–30 VDC
• Absolute Maximum Input Voltage: 33 VDC
• Reverse Voltage Protection: –0.6 VDC
• Input Delay: <10 ms (On to Off or Off to On)
• Input Impedance: >30 kΩ without baseplate, ≈3 kΩ with baseplate
• Input Power Consumption: 0.2 W/pt @ 24 VDC; 0.5 W/pt @ 33 VDC
• Input Thresholds: 0–5 VDC = Off; 6–14 VDC = Transition; 15–30 VDC = On

Diagnostics

• Force-to-Value Diagnostic (FVD): <2 ms test cycle
• Max Toggle Rate for FVD: <20 toggles/sec
• FVD Off-State Glitch: <2 ms, ≈36% of test voltage
• ADC Scan Time: <1 ms for all 32 points

Isolation

• Functional to Protective Earth: 500 VDC
• Functional to Logic Earth: 800 VDC

Dimensions and Weight

• Dimensions: 12.5 cm × 17 cm × 14.2 cm
• Weight: 2.1 kg